As far as rock, evanescence came out with a new album in October, "Evanescence", which I highly recommend. Less "goth" than their other music, which I think really makes it a solid album.
As far as electonica, Bassnectar came out with "Divergent Spectrum" which is pretty good, although they mixed in some weird stuff with their dubstep
As far as Pop, I highly recommend Gorillaz' "Plastic Beach" which came out spring of 2010, so it's a little older but still relevant. They also came out with "The Fall" Spring of this year, but it's not as good.
As far as Soul/R%B, I'd check out Daley's new mixtape "Those Who Wait", which can be downloaded for free at daley.tv. He's got a great voice. Good stuff.
That's all I could think of right now, but I hope tu give this stuff a chance and I hope this helps :D
ok these guys are awesome. these are just covers but they did all of these performances with just their voices no background música o instruments o anything. they won the competition and got a recording contract so they should be coming out with their own música soon.